obtundity

Noun

 * 1)  The state or characteristic of having dulled senses or limited awareness.
 * 2) * 1824, (author), Francis Howell (translator), The Characters of Theophrastus, Josiah Taylor (London), p. 237 (Google preview):
 * [T]here are beings [who] . . . revel, with a lively zest, among all the things that are most foul and loathsome. . . . Sensuality, force of temper, inertness, obtundity of perception, personal idolatry, and the destitution of the higher and better emotions of humanity, are the ingredients of a constitution of this order.